./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7ec1d1d4856d24b14cb09101172e0975902985e260ca74737e781ce301d37cbb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:25:11,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:25:11,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:25:11,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:25:11,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:25:11,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:25:11,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:25:11,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:25:11,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:25:11,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:25:11,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:25:11,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:25:11,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:25:11,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:25:11,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:25:11,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:25:11,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:25:11,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:25:11,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:25:11,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:25:11,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:25:11,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:25:11,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:25:11,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:25:11,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:25:11,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:25:11,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:25:11,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:25:11,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:25:11,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:25:11,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:25:11,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:25:11,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:25:11,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:25:11,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:25:11,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:25:11,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:25:11,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:25:11,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:25:11,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:25:11,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:25:11,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-02-21 03:25:11,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:25:11,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:25:11,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:25:11,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:25:11,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:25:11,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:25:11,192 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:25:11,193 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 03:25:11,193 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 03:25:11,193 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 03:25:11,194 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 03:25:11,194 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 03:25:11,194 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 03:25:11,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:25:11,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:25:11,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:25:11,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:25:11,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 03:25:11,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 03:25:11,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 03:25:11,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:25:11,196 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 03:25:11,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:25:11,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 03:25:11,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:25:11,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:25:11,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:25:11,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:25:11,199 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 03:25:11,199 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec1d1d4856d24b14cb09101172e0975902985e260ca74737e781ce301d37cbb [2022-02-21 03:25:11,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:25:11,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:25:11,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:25:11,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:25:11,491 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:25:11,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2022-02-21 03:25:11,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6d0e784/e1aa06f77bd8445690699659e22f6493/FLAGd82ae8684 [2022-02-21 03:25:11,964 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:25:11,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2022-02-21 03:25:11,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6d0e784/e1aa06f77bd8445690699659e22f6493/FLAGd82ae8684 [2022-02-21 03:25:11,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6d0e784/e1aa06f77bd8445690699659e22f6493 [2022-02-21 03:25:11,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:25:11,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:25:11,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:25:11,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:25:11,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:25:12,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:25:11" (1/1) ... [2022-02-21 03:25:12,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3048a18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12, skipping insertion in model container [2022-02-21 03:25:12,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:25:11" (1/1) ... [2022-02-21 03:25:12,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:25:12,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:25:12,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:25:12,190 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:25:12,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:25:12,219 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:25:12,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12 WrapperNode [2022-02-21 03:25:12,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:25:12,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:25:12,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:25:12,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:25:12,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,243 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2022-02-21 03:25:12,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:25:12,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:25:12,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:25:12,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:25:12,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:25:12,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:25:12,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:25:12,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:25:12,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (1/1) ... [2022-02-21 03:25:12,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:12,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:12,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:25:12,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-02-21 03:25:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:25:12,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:25:12,372 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:25:12,374 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:25:12,469 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:25:12,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:25:12,477 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-21 03:25:12,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:25:12 BoogieIcfgContainer [2022-02-21 03:25:12,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:25:12,480 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 03:25:12,480 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 03:25:12,484 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 03:25:12,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:25:12,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 03:25:11" (1/3) ... [2022-02-21 03:25:12,486 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1379ce2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:25:12, skipping insertion in model container [2022-02-21 03:25:12,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:25:12,487 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:12" (2/3) ... [2022-02-21 03:25:12,487 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1379ce2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:25:12, skipping insertion in model container [2022-02-21 03:25:12,487 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:25:12,487 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:25:12" (3/3) ... [2022-02-21 03:25:12,489 INFO L388 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1.c [2022-02-21 03:25:12,549 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 03:25:12,549 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 03:25:12,550 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 03:25:12,550 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 03:25:12,550 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 03:25:12,550 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 03:25:12,550 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 03:25:12,550 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 03:25:12,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:25:12,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-02-21 03:25:12,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:25:12,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:25:12,592 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:25:12,592 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2022-02-21 03:25:12,593 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 03:25:12,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:25:12,596 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-02-21 03:25:12,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:25:12,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:25:12,597 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:25:12,597 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2022-02-21 03:25:12,603 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 8#L18-2true [2022-02-21 03:25:12,604 INFO L793 eck$LassoCheckResult]: Loop: 8#L18-2true assume !!(main_~x~0#1 <= 10); 5#L18true assume !(main_~x~0#1 > 6); 8#L18-2true [2022-02-21 03:25:12,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:25:12,610 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-02-21 03:25:12,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:25:12,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951849575] [2022-02-21 03:25:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:25:12,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:25:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:12,694 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:25:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:12,720 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:25:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:25:12,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-02-21 03:25:12,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:25:12,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828282005] [2022-02-21 03:25:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:25:12,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:25:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:12,740 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:25:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:12,753 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:25:12,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:25:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-02-21 03:25:12,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:25:12,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236766611] [2022-02-21 03:25:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:25:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:25:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:12,770 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:25:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:12,776 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:25:12,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 03:25:12 BoogieIcfgContainer [2022-02-21 03:25:12,864 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 03:25:12,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:25:12,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:25:12,865 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:25:12,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:25:12" (3/4) ... [2022-02-21 03:25:12,867 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 03:25:12,896 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 03:25:12,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:25:12,905 INFO L158 Benchmark]: Toolchain (without parser) took 913.09ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 50.2MB in the beginning and 78.8MB in the end (delta: -28.6MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2022-02-21 03:25:12,906 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:25:12,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.70ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 50.0MB in the beginning and 78.8MB in the end (delta: -28.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-02-21 03:25:12,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.26ms. Allocated memory is still 102.8MB. Free memory was 78.6MB in the beginning and 77.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:25:12,909 INFO L158 Benchmark]: Boogie Preprocessor took 12.79ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 76.5MB in the end (delta: 786.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:25:12,910 INFO L158 Benchmark]: RCFGBuilder took 221.52ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 68.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:25:12,911 INFO L158 Benchmark]: BuchiAutomizer took 383.76ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 52.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-02-21 03:25:12,912 INFO L158 Benchmark]: Witness Printer took 37.97ms. Allocated memory is still 102.8MB. Free memory was 52.6MB in the beginning and 78.8MB in the end (delta: -26.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-02-21 03:25:12,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory is still 43.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.70ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 50.0MB in the beginning and 78.8MB in the end (delta: -28.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.26ms. Allocated memory is still 102.8MB. Free memory was 78.6MB in the beginning and 77.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.79ms. Allocated memory is still 102.8MB. Free memory was 77.3MB in the beginning and 76.5MB in the end (delta: 786.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.52ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 68.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 383.76ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 52.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 37.97ms. Allocated memory is still 102.8MB. Free memory was 52.6MB in the beginning and 78.8MB in the end (delta: -26.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {x=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2490923c=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() Loop: [L17] COND TRUE x <= 10 [L18] COND FALSE !(x > 6) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 03:25:12,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)